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The Yellowstone Plateau Volcanic Field, also known as the Yellowstone Supervolcano or the Yellowstone Volcano, is a complex volcano, volcanic plateau and volcanic field located mostly in the western U.S. state of Wyoming, but it also stretches into Idaho and Montana. [4] [5] It is a popular site for tourists. [6] Map of Yellowstone Volcano ash beds
The Lava Creek Tuff is a voluminous sheet of ash-flow tuff located in Wyoming, Montana and Idaho, United States. It was created during the Lava Creek eruption around 630,000 years ago, which led to the formation of the Yellowstone Caldera. This eruption is considered the climactic event of Yellowstone's third volcanic cycle.
By its characteristic chemical fingerprint and the distinctive size and shape of its crystals and glass shards, the volcano stands out among dozens of prominent ashfall horizons laid down in the Cretaceous, Paleogene, and Neogene periods of central North America. The event responsible for this fall of volcanic ash was identified as Bruneau ...
Yellowstone National Park, Wyoming, United States: Parent range: Rocky Mountains: Topo map: USGS Yellowstone National Park: Geology; Rock age: 2,100,000–70,000 years [3] Mountain type(s) Caldera [2] and supervolcano: Volcanic field: Yellowstone Plateau: Last eruption: Approximately 640,000 years ago (caldera-forming); 70,000 years ago (in the ...
The Bruneau-Jarbidge volcanic field, also known as the Bruneau-Jarbidge eruptive center [1] is located in present-day southwest Idaho. The volcano erupted during the Miocene , between ten and twelve million years ago, spreading a thick blanket of ash in the Bruneau-Jarbidge event .
The geology of Wyoming includes some of the oldest Archean rocks in North America, overlain by thick marine and terrestrial sediments formed during the Paleozoic, Mesozoic and Cenozoic, including oil, gas and coal deposits. Throughout its geologic history, Wyoming has been uplifted several times during the formation of the Rocky Mountains ...
Highest point; Elevation: 11,927 ft (3,635 m) [1] Prominence: 962 ft (293 m) [1] Coordinates: 2]: Geography; Location: Park County, Wyoming, U.S.: Parent range: Absaroka Range: Topo map: USGS Sunlight Peak WY: Geology; Mountain type: Stratovolcano: Volcanic arc: Absaroka Range: Last eruption: Around 43 million years ago [3]: Climbing; First ascent: Unknown: Easiest route: Scramble class III ...
Their sediment came from rock eroded from a mountain chain east of the seaway interspersed with ash from volcanos west of the seaway in the Sierran Arc (a long volcanic island chain like the modern Andes Mountains but in island form). This ash eventually became bentonite, a clay which expands in water and thus causes landslides in the park. [8]